Why do I feel guilty?

Hi, so long story short, I’m in a loving relationship for almost 2 years now and it’s literally been the best thing that’s ever happened to me. I’ve never been in love before and he’s the only person to make me experience it.

Before I met him, I used to frequent a bar in my town where some guy I always flirted with (kinda had a thing together) worked.

But, for some reason, I rarely went back there since I’ve got in my new relationship, I just didn’t feel like it, and I found it somehow disrespectful to my boyfriend (he’s kinda make it look like he doesn’t feel good if I go there).

We’re at a really great point in our relationship, we trust each other, we communicate quite good I must say, and we’re also best friends.

For the past week he’s been out of town, and I went out with my friends last night which then insisted in continuing the night down to that bar where that other guy still works. I was somehow in denial but still went. I didn’t chat with him, I was not interested at all and all I could think was my boyfriend and how this might come off to him as “cheating” or “disrespect”, so I left earlier and got home. I didn’t want him to think anything of it & since he didn’t ask a lot of questions I didn’t even mention of going there and seeing him.

I know I haven’t done anything “bad”, and never ever would have but I still feel guilty about lying and maybe doing something that he wouldn’t like/feel bad about.

I’ve never had something like this and I truly want this to work.

How do I get over this guilt?

We’re 24 and 26 btw.